tslint error no-shadowed-variable code example

Example: Shadowed name: 'resolve' (no-shadowed-variable)tslint(1)

fs.readdir(fileUrl, (err, files) => {
  fs.readFile(path.join(fileUrl, files[0]), function (err, data) {
    if (!err) {
    	res.send(data);
    }
  });
});